Double shade-holder.



A. A. WOHLAUER.

DOUBLE SHADE HOLDER.

APPLICATION FILED DEC. is. 1915.

L fi gfil Patented Aug. 7, 1917.

lw/venoli ALFRED A. VJOHLAUEFd-yfil? HEY 1503K, hi.

DOUBLE SH '-;.DE-HOLDER.

Specification of Letters Patent.

Patented Aug. "Z, 1917.

Application filed December 16, 1915. Serial No. 67,115.

To all 1137mm it may concern:

Be it known that I, ALFRED A. WOHLAUER, a citizen of the German Empire, residing at the city, county, and State of New York,

have invented certain new and useful. Im-

however, may be employed for supporting other shades for any suitable light source.

in the development of modern lighting, the so-called semi-indirect fixture has become an important factor. Such a fixture consists of a substantially hemispherical shaped bowl or dish, open at the top and made of translucent glass, which diffuses the light and directs a large amount of the light flux to the ceiling from which it is further diiiused and redirected. That type 01" fixture is subject to the disadvantages that the open bowl collects dust and that it is difiicult to properly control the amount of light distribution utilized in the upper and lower hemispheres.

Attempts have been made to overcome these objections by providing fixtures, hav ing a reflecting device located above the open end of the bowl. Such fixtures are not, however, entirely dust proof nor can the light distribution thereof be conveniently controlled.

The difficulty of devising a proper fixture has been mainly due to the lack of a suitable shade-holder. According to my invention, whereby I provide a holding device for supporting, a reflecting, and a refracting or diffusing shade in adjustable relation to each other, i am enabled to produce a fixture having the appearance and effect of a semi-indirect fixture, but which is dust proof and by means of which variations in the light distribution may be readily obtained.

In the accompanying drawings, illustrating a preferred form of the invention, igure 1 is a vertical section of the device having two shades engaged therein and shown in position relative to an incandescent electric lamp. Fig. 2 is avertical section of a re flector-holding member of the device; and, Fig. 3 is a similar section of a detached globe-holding member.

The device consists generally of two shade-holding members, one adjustable axially in relation to the other, and each provided with means for engaging the top or upper end of a shade.

Referring to the drawings, 1 represents the shell or body portion of one member of the device having its lower end 2 flared and terminating in a depending annular flange 3 which carries a plurality of screws 4, or other suitable fastenin elements, for engaging the neck of a re ector 5.

The other member has a. tubular stem 6,

by which it is secured to the shell 1, and has its lower end flared, as at 7, and provided with a flange 8 in which is secured the fastening elements 9 for engaging the neck of a globe 10.

' The two members of the holder are preferably detachably secured together and in such manner as to permit of vertical adjustment. To this end I provide the upper portion of the stem 6 with screw-threads 11 which are adapted to be engaged in the threads 12 formed in the shell 1. A set screw 13 may be provided to maintain the parts in adjusted position.

By simply screwing the stem 6 up or down, the position of the globe may be readily adjusted relative to thereflector 5 or to the light source 15, thereby obtaining variations in the light distribution.

The manner of assembling a fixture formed with my improved shade holding device is as follows: The shell 1 of the upper member of the holder is secured in position surrounding the socket 14 of the incandescent electric lamp 15 and the reflector 5 is then engaged in the screws 4 of said member. The stem 6 of the lower member is then screwed into the shell and finally the globe or shade 10 is fastened in the holder.

I do not intend to confine myself to the precise construction herein shown and described as it is evident that various modifications may be made without departing from the scope of my invention.

I claim: I

l. A double shade holder consisting of tachably connected internally to the body portion of the other shell. 2. A double shade holder consisting of .two shells each having an enlarged lower end adapted to receive and support the neck of a shade, one of said shells having a tubular stem of a diameter large enough to pass over an incandescent lamf socket and connected internally to the b0 y portion of the other shell by means of screw-threads.

' 3. An electric light fixture comprising, a socket, a lamp in the socket, an outer shell surrounding the socket and having a flared lower end provided with shade engaging means, a reflector held by its neck in said shell, an inner tubular shell having threaded connection with the outer shell and having its lower end flared and provided with shade engaging means, the reflector being engaged at its upper end in one of said members, the globe being engaged at its upper end in the other member, and the globe holding member being adjustable vertically with respect to the reflector holding member.

In testimony whereof I have hereunto ,afiiXed my signature-in the presence oftwo subscribing witnesses.

ALFRED A. WOHLAUER.

' In the presence of--' DANIEL FEDER, 'RUTH Tisn. 

